<P>This paper proposes a detection technique for irreversible demagnetization using the harmonics characteristics of the back electromotive force (BEMF) in brushless dc motors (BLDCMs). We analyze the harmonics characteristics of the BEMF that a...
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https://www.riss.kr/link?id=A107657061
2015
-
SCOPUS,SCIE
학술저널
1-4(4쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P>This paper proposes a detection technique for irreversible demagnetization using the harmonics characteristics of the back electromotive force (BEMF) in brushless dc motors (BLDCMs). We analyze the harmonics characteristics of the BEMF that a...
<P>This paper proposes a detection technique for irreversible demagnetization using the harmonics characteristics of the back electromotive force (BEMF) in brushless dc motors (BLDCMs). We analyze the harmonics characteristics of the BEMF that are obtained for fault types encountered by interior permanent magnet (PM)-type BLDCMs according to the magnetization pattern of irreversible demagnetization. An irreversible demagnetized PM is represented as an equivalent magnetizing distribution by applying space harmonics analysis using both the finite element method and the space harmonics method. Furthermore, we analyze flux linkage and BEMF waveforms for different demagnetization ratios.</P>
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